E-PROPS TESTS

1 - Flight tests : comparative tests made by the E-Props team and by users

2 - Ground tests : mechanical strength, vibrations, fatigue...

3 - Flying test bench

1 - FLIGHT TESTS

The E-PROPS propellers are tested on ground (see below), and also on flight. A lot of flight tests campaign are made by customers, especially during carbon propellers' developments for UAV. Some flight tests are confidential, but some have been published.

"Take-off and climb performances with the E-PROPS are better than those obtained with EVRA propeller, and are similar to the performances obtained with a variable pitch propeller ARPLAST PV50 Constant Speed".

These tests results are extremely satisfactory, because they consolidate calculations and modellings of our engineering department by a check in real conditions at 10 times the worse case of functioning.

2.2 E-PROPS TESTS BENCHES

B - Fatigue tests bench, to stress the blade with alternating bending, to reproduce the engine's torque, and to establish the real propellers MTBO.

C - Traction tests bench. 40 tonnes hydraulic cylinder.

D - System of electronic sensors (accelerometers and strain gauge), which is settled on the propeller's hub. A wireless connection Bluetooth allows to get back the data on a computer in the plane.

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3 - E-PROPS FLYING BENCH

2015 : E-Props has acquired a SKYRANGER with a 100 hp Rotax 912S

This investment has been made in order to continue testing the E-Props for aircraft and ultralights. This aiprlane is equipped with innovative instruments (DAU : Data Acquisition System) to record all propellers parameters in all flight configurations, to propose ever better propellers.

This DAU allows to obtain the following parameters at each moment of the flight :